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2 sheets-sheet 1 L. MARTIN.

Machine forrExterminating Noxious Grasses. No. 203,172. Patented Aprilso, 187s.

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2 Sheets-Sheet 2l l L. MARTIN.

Machine for Exterminating Noxious Grasses.

N 203,172. Patented April 30,18

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A`IMPRoll'lill/nan' 1N MACHINS FoR EXTERMI'NATING Noxious.amiss159.1,lVV

. stetieaeimftraing part of Leafs piattino. 203,172, aan xpm 3o, 'ieyeg ipptcatin ined fV i p. l January 2,1878. A r l Be it known that I, LOUIS MARTIN, of Lyons, in the county of Wayne andStat'ev of New York, haveV invented a' certain new and useful Improvement lin"l\{[a`chii1es` for Exterminatin g Ncxius Grasses; and I do' hereby declare that the follo wing is af ull, clear, and 'exact description of the construction and'operationof the same, referencebeing had to the accompanying drawings, in which-l "Figure 1` i`s a side elevation. Fig. 2 is a` plan. Fig. 3 is a rear elevation.

1l6, and 7 are detail yiews.

' My improvement relates to machines for exterminating noxious grasses in whichfa'cylin- Figs. 4, 5,

der armed with teeth is employed, the teeth entering the ground and pulling out the grass by the roots.

The invention consists in the construction' and arrangement of parts, hereinafter more fully described and definitely claimed.

A is a rectangular frame, upon which is mounted a drivers seat, and which is provided with a pole or tongue, B, by which the machine is drawn. O C are two hangers at 'the other the cylinder D, together with the main frame andthe other parts, will be correspondingly raised or lowered, thereby varyin g the depth of cut of the cylinder-teeth, or throwing said teeth entirely out of the ground, which is necessary in going into the field. G Gr are cam-levers, mounted in bearings d d on top of the main frame. Cords or chains ff are attached to the heads of these levers, and extend thence around pulleys g g, and are attached to the levers E E, as clearly shown in Figs. 1 and 2. The cam-levers Gr G, as well as the handlevers E E, are within reach of the driver, andby seizing them he can at any time elevate the cylinder, so as to run it clear of obstructions or grade the cut; and by engagin g the' 'cam-levers;` with suitable catches 'h h, heca'n retain the-cylinder in an :elevatedpjosition `any desired length of time.l flhercy-linder is" provided withho'oking teeth t t', which strike vinto the ground andtear up the roots Y ofthe grass. H Hare bearings invtheform of a' bow, which are attached to thefhangers C C, Iand project backward. These'bearings are provided with boxes, which hold the shaft j; On this shaft are aseriesof heads, k k,hav' ing teeth 'Zyl cast in, said teeth passing between the digginglteeth 'of the cylinder, and forming clearersflforlclearing the cylinder 'of :the "grass it is thrown up.' The clearers 'may run in either direction desired, butI preferably ripward. The heads or disks of the clearers may have hubs, which abut to keep them in place and stien the shaft. The clearer-shaft is driven by a chain or band, m, at each end, which passes around a pulley, a, of the cylinder-shaft and a smaller pulley, o, of the clearershaft. The chain or band may be crossed or not, according tc the direction the clearers are to run. p isr a cog-wheel on one end of the clearer-shaft. q is a pinion, which gears with it7 being attached to a bearing, 1'. form in the rear of the machine, having an endless apron, K, which passes over pulleys s s at the inner and outer ends. On the shaft of the inner pulleys is attached a spurgear, t, which, in its normal position, is out of engagement with the pinion q, in which case the endless apron is stationary. The inner end of the platform is attached to springs u u, so that it may be raised and lowered, said springs being bolted to the bearings H H, as shown in Fig. l. L is a lever, pivoted to the main frame,

and 'u is a connection between the outer end of the lever and the spring u.

When the lever is pressed down the spring is elevated, and the spurgear t is then brought into engagement with the pinion qand motion is imparted to the endless apron, to discharge the grass that is thrown upon it by the cylinder-teeth. By this means a quantity of the grass can be collected on the platform and then thrown off in a heap.

The outer end of the platform is controlled by a lever, M, with two branching connections, w w, which extend to the outer corners of the platform, thus leaving free space for the dis- I is a platcharge of the grass. By this means the inclination of the platform and endless apron may be varied to meet the requirements of the work.

1n some cases the grass may be made to slide over the platform without running the apron, if set at proper inclination.

The cylinderl) is composed of a series of disks or rings, w x, which are placed upon the shaft, and clamped together by nuts at each end, or by keys or other suitable means. These rings are fastened together in pairs, as shown in Fig. 5, by means of bolts z z, clamping the teeth it betweenthem. For this purpose sockets y y, with cross-heads or enlargements at their inner end, are formed in the plane faces of the rings, as shown in Fig. 7, and the teeth are formed with corresponding cross-heads or enlargements at their ends, which t in these sockets, and when the two rings are clamped together the teeth cannot escape. This is a convenient way of attaching the teeth, as they are easily replaced if broken, and it enables them to be removed for sharpening or repairs. They might be cast solid in the rings, but would not be so ei'ective.

Fig. 6 shows an outside view, and Fig. 7 an yinside view, of one of the rings. The shaft on whichfthe rings rest may be round, square, or

of other form in cross-section; but it is pref- Aor angular order around the cylinder, to bring a successionof cutting-points into the earth.

'The machine above described is also effective as a pulverizer.

I claim- 1. In a machine for eXterminating noxious grasses, the cylinder D, constructed of rings or disks resting upon the shaft and clamped at the ends, the said rings or disks being bolted together in pairs, and securing the teeth iz' between them, as shown and described, and for the purpose specified.

ting faces, clamped together in pairs by the bolts z z, and provided with the sockets y y, enlarged at their inner ends to receive and hold the corresponding shanks of the teeth 'fi t', as shown and described, and for the purpose specified.

3: Thecombination, with the cylinder D and clearers l l, of the platform I and endless apron K, the platform being attached to the springs u u at the inner end, and adjustable both at the inner and outer ends by the levers L M, as shown and described, and for the purpose specified. f

In witness whereof I have hereunto signed witnesses. f'

Witnesses:

R. F. Oscoop,

LOUIS MARTIN.

J. N. COLE.

l2. The disks or rings a: m, having plane abut- Y my name in the presence of two subscribing, 

